311312232231 has 32 divisors (see below), whose sum is σ = 557314211328. Its totient is φ = 149280589440.

The previous prime is 311312232221. The next prime is 311312232277. The reversal of 311312232231 is 132232213113.

It is not a de Polignac number, because 311312232231 - 2¹⁴ = 311312215847 is a prime.

It is a super-2 number, since 2×311312232231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311312232221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51830536 + ... + 51836541.

It is an arithmetic number, because the mean of its divisors is an integer number (17416069104).

Almost surely, 2^311312232231 is an apocalyptic number.

311312232231 is a deficient number, since it is larger than the sum of its proper divisors (246001979097).

311312232231 is a wasteful number, since it uses less digits than its factorization.

311312232231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103667111.

The product of its digits is 1296, while the sum is 24.

Adding to 311312232231 its reverse (132232213113), we get a palindrome (443544445344).

The spelling of 311312232231 in words is "three hundred eleven billion, three hundred twelve million, two hundred thirty-two thousand, two hundred thirty-one".